Merge pull request #98 from hkupty/performance/benchmark-0.8

Release 0.8

chore: Prepare 0.8.0-rc3

Merge pull request #95 from hkupty/improve-tests

Restructure penna-api

Merge pull request #94 from hkupty/cleanups-and-updates

JDK21: Further cleanups and improvements

Merge pull request #79 from hkupty/release/0.7.2

Release 0.7.2

Merge pull request #70 from hkupty/thread-stuff

Refactor core mechanisms for thread-safety

Merge pull request #68 from hkupty/release/0.7

Rewrite paragraph

Merge pull request #63 from hkupty/0.7-alpha-fixes

Alpha fixes: Fix issues from alpha1/2 releases

Merge pull request #42 from hkupty/release/0.6.1

Release 0.6.1